Milos Raonic announced Tuesday that Mark Knowles has joined his team and will be on board in time to help prepare Raonic for the upcoming grass season.
Knowles, 45, was a longtime doubles partner with Canadian Daniel Nestor, and won three Grand Slam titles - the 2002 Australian Open, the 2004 US Open, and the 2007 French Open with Nestor.
Raonic parted ways with coach Richard Krajicek last week.